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On the solid solution of the spinel phase in the system NiO–Al2O3

✍ Scribed by Magnus Rotan; Julian Tolchard; Erling Rytter; Mari-Ann Einarsrud; Tor Grande

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
246 KB
Volume
182
Category
Article
ISSN
0022-4596

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✦ Synopsis

The solid solubility of Al 2 O 3 in NiAl 2 O 4 spinel has been investigated by powder X-ray diffraction of samples prepared by solid state synthesis. The solid solution region found was in agreement with a previous report. The cubic cell parameter of the spinel solid solution was observed to decrease with increasing alumina content. Spinel with high alumina content was shown to be close to an inverse spinel as previously reported for stoichiometric NiAl 2 O 4 and the inversion parameter proved to be relatively independent of the overall composition.

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Spinel Solid Solutions in the Li–Fe–Mn–O
Spinel Solid Solutions in the Li–Fe–Mn–O System
✍ Tomáš Grygar; Petr Bezdička; Petr Vorm; Neli Jordanova; Petr Krtil 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 443 KB

The ranges of Li+Fe+Mn composition in which single-phase microparticulate spinel oxides are formed by heating in air were determined. The aim was to reevaluate previously published reports on binary solid solutions between LiFe 5 O 8 and Li+Mn+O spinels by covering the whole possible range of (Li, F